pinctrl: xway: Be sure to clamp return value

As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Pramod Gurav <pramod.gurav@smartplayin.com>
Cc: John Crispin <blogic@openwrt.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinctrl-xway.c b/drivers/pinctrl/pinctrl-xway.c
index e56222eac96c6b49741537d0b068fce28a5adaf5..ebd867f50700bf78585104f0be2dd2953a1aa8c6 100644 (file)
--- a/drivers/pinctrl/pinctrl-xway.c
+++ b/drivers/pinctrl/pinctrl-xway.c
@@ -660,7 +660,7 @@ static int xway_gpio_get(struct gpio_chip *chip, unsigned int pin)
 {
        struct ltq_pinmux_info *info = dev_get_drvdata(chip->parent);
 
-       return gpio_getbit(info->membase[0], GPIO_IN(pin), PORT_PIN(pin));
+       return !!gpio_getbit(info->membase[0], GPIO_IN(pin), PORT_PIN(pin));
 }
 
 static int xway_gpio_dir_in(struct gpio_chip *chip, unsigned int pin)